#include<iostream>
using namespace std;

int main()                 //B2035,判断整数的正负
{
    long long n;
    cin >> n;
    if(n > 0)
    {
        cout << "positive" << endl; 
    }
    else if(n == 0)
    {
        cout << "zero" << endl;
    }
    else
    {
        cout << "negative" << endl;
    }
    return 0;
}